John, the U.S. has done some pretty awful things in the world in it's history but that doesn't excuse Putin for his invasion of a sovereign country that posed no threat to Russia. For something similar we would have to go back 80 years with Hitler's invasion of Poland.

Biden, at least so far, has been successful at doing the best we can without going to war with Russia.

Of course if Putin were to make a move on a NATO country, then America would be committed to defend that country. There needs to be no doubt in the minds of Americans that that would be the case.

Many thanks. Best to you.